Loose-leaf binder.



No. 652,439.. l Patentd .lune 26, |900.

F. X. MUDD.

LUDSE LEAF BINDER.

(Application ma Apr. m, 1900.) (N u M o d e l n ulllmlluullnmlwuum i @lll M!! Lulll A'Inn'r this.

FRANK X. MIIDD, or cI-IIoAeo, ILLINOIS.

Loose-LEAF BINDER.

SPECIFICATION forming part of Letters Patent No. 652,439, dated J' une 26, 1900.

Application filed April 2l, 1900.

To all whom it may concern..-

Be it known that I, FRANK X. MUDD, acitizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Loose-Leaf Binders, of which the following is a specification.

My invention relates to that class of temporary or loose-leaf bind ers in which provision is made for separating the leaves readily at any place for 'the purpose of removing any desired leaf.

My object is to provide an improved construction for binders of the type having backsections hinged together centrally of the back and provided at each of the two sections with tines or impaling-prongs for entering the leafperforations and adapted to receive at either section when the binder is open any number of the leaves, 4whereby the leaves may be parted, as desired, with a view to removing any particular leaf.

My invention consists in the improved backsection structure and the improved locking mechanism hereinafter described.

In the accompanying drawings, Figure l is an inner View of the binder with the coversections thrown open while the back-sections remain closed, a portion of a back-section end being broken away to expose the locking device; Fig. 2, a section taken as indicated at line 2 of Fig. 1, and Fig. 3 a detail View of a metallic end and lock-piece employed.

A A represent back-sections,and B B coversections flexibly joined to the back-sections at a. The back-sections comprise suitablydisposed Z-shaped sheet-metal hinge-pieces b and c, pivotally joined at their lower edges at d, and iilling-blocks c and f of wood or other light material. The Z-shaped pieces are so disposed that two flanges ZJ and c' lie side by side at the center plane of the binder. The Webs h2 c2 project in opposite directions therefrom, and the flanges b3 c3 project from the Webs on the side away from the pivotal connection of the back-sections. A covering of canvas or other flexible material O is shown on the outer-surfaces of the backsections and cover-sections.

The back-section A is shown provided with curved :impalingprongs g and the section A.

with similar prongs g. One of said sections Serial No. 13,711. (No model.)

(here A) is provided with end pieces D, rigidly joined thereto and each provided with a catch-receiving perforation 72, and a curved slot h. The otherv back-section is provided inside the planes of the ends D with outturned catches h2, preferably carried by springs having portions h3 parallel to said ends and inturned portions h4, secured to the flange c3. The portions h3 are provided with outwardly projecting buttons or lugs lr", which move in the curved slots h' and serve to unlock the catches.

The preferred method of securing the end pieces D to the backsection A is to provide the latter at its ends with studs or projections t, which project through perforations 7a in the end plates and are riveted. Screws are employed to secure the metallic parts to the blocks e and f properly.

The manner of using files of the general character described is well understood. In the present construction the catches h2 are located at such a distance from the pivot d as to give them great efficiency in holding the back-sections closed. When desired, however, the catches are readily forced inwardly by means of the buttons h5, and thereby disengaged from the ends D, permitting the back-sections to swing open.

The construction is cheap, durable, and perfectly adapted to its purpose.

W'hat I claim as new, and desire to secure by Letters Patent, is-

l. In a loose-leaf binder, the combination of pivoted back-sections comprising Z-shaped sheet-metal hinge-plates disposed with one set of lianges side by side at the central plane of the binder and with webs extending in opposite directions at a distance from the pivotal connection, and impalingprongs carried by said back-sections, substantially as and for the purpose set forth.

2. In a loose-leaf binder,the combination of Z-shaped hinge-plates pivoted together at two adjacent flanges located at the central plane of the binder, filling-blocks outside the webs of said plates, end plates secured to one of the back-sections thus formed and pro vided with catch-engaging perforations, and

catches carried by the other back section, substantially as and for the purpose set forth. 3. In a loose-leaf binder, the combination of IOO Z-shaped hinge-plates pvoted together at and provided with operating meansprojecttWo adjacent anges located at the central ing outsidethe end plates, substantially as Io plale off thbilu'der, llcingi-locks outie the andY for the purpose set forth.

We S O S311 p L les, 6H p 2L GS SGCUIG 0 01216 w of the back-sections thus formed and pro- FRANK X MUDD vided With catch-engaging perforations, and In presence ofcatches located on the inner/sides of said end D.` W. LEE,

plates and carried by the other back-section A. D. BACCI. 

